Syzygium namborense (Myrtaceae), a new species from Assam, India Author Dey, Debolina 0000-0002-0048-8363 Department of Botany, Gauhati University, Jalukbari, Guwahati, Kamrup (Metro), Assam- 781014, India. devolinadey @ rediffmail. com; https: // orcid. org / 0000 - 0002 - 0048 - 8363 devolinadey@rediffmail.com Author Sarma, Jatindra State Medicinal Plant Board, Department of Environment and Forest, Lankeswar, Jalukbari, Guwahati, Kamrup (Metro), Assam- 781014, India. Author Devi, Nilakshee 0000-0002-6007-4904 Department of Botany, Gauhati University, Jalukbari, Guwahati, Kamrup (Metro), Assam- 781014, India. devinilakshee @ gmail. com; https: // orcid. org / 0000 - 0002 - 6007 - 4904 devinilakshee@gmail.com text Phytotaxa 2022 2022-03-07 538 2 133 140 journal article 20286 10.11646/phytotaxa.538.2.5 c4693220-a880-49f3-805e-f0fcc389c705 1179-3163 6333689

TABLE 1. Morphological differences between Syzygium namborense and S. nervosum.

Characters	Syzygium namborense	Syzygium nervosum
Bark	Bark olive green, eventually turns into black, coarse.	Bark pale brown or grey, glabrous.
Young Branchlets	Compressed with shorter nodes (1.5–2 cm apart) with greater number of leaves, often up to 20 at a time.	Less compressed with longer nodes (6–7.7 cm apart) and with a lesser number of leaves, often up to 8 at a time.
Acumen	ca. 0.6 cm long.	ca. 1 cm long.
Leaves	5–18 × 1.1–6.5 cm, strictly elliptic.	7.6–22 × 7.5–12 cm, elliptic to obovate.
Leaf tip	Strictly acuminate.	Mostly round, rarely obtuse, acute, acuminate, apiculate.
Leaf base	Cuneate.	Obtuse-round, slightly attenuate.
Lateral nerves	Lateral nerves 13–15 pairs. All secondary veins form an intramarginal vein loop near the margin.	Lateral nerves 8–10 pairs. Only the upper secondary veins form an intramarginal vein loop near the margin while the lower secondary veins are arcuate without any loop formation.
Inflorescences	5–7 cm long.	5–10 cm long.
Pedicel	Absent.	0.05–0.2 cm long.
Flowers	Yellowish white, 1–1.2 cm long.	Greenish white, 0.6–0.8 cm long.
Hypanthium	Obconical, slightly tapering towards the base.	Campanulate, swollen like a cup.
Ovules	20–30 per locule.	12–15 per locule.